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A multimeter is used to measure various parameters in an electrical circuit. It can be used to measure things like voltage, current, resistance, frequency, and more depending on the how advanced the meter is.

The digital aspect of the meter is easier to explain with respect to an analog meter. The old analog meters used built in analog circuits to detect the above parameters and display the measurement by moving a mechanical needle a certain distance based on the magnitude of the measurement. This distance could be correlated with the magnitude using formulae and a scale was printed on the face of the meter so you could tell what value the needle was pointing at.

Digital meters, however, take the analog signals and convert them to digital signals. These digital signals represent binary information that a micro-processor can read. The processor can be programmed to interpret the incoming data and then display in on the screen.

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15y ago

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